body{
background-color:lightgreen;
}
#wrapper{
width:1200px;
height:auto;
align:center;
}
#header{
width:auto;
height:100px;
text-align: center;
background-color:lightblue;
}
#main{
width:auto;
height:auto;
background-color:lightyellow;
}
.mainchat{
width:auto;
align:center;
height:400px;
background-color:lightcyan;
overflow:auto;
}
.chatbox{
width:auto;
align:center;
height:100px;

}
#footer{
clear:all;
text-align: right;
background-color:red;
}